function checkForm() {
    //验证账号
    var account = document.getElementById("myForm").elements["username"].value;
    if (account == null || account == "") {
        alert("账号不能为空");
        return false;
    }

    //验证密码
    var pwd = document.getElementById("myForm").elements["password"].value;
    if (pwd == null || pwd == "") {
        alert("密码不能为空");
        return false;
    } else if (pwd.length < 6 || pwd.lengthv > 12) {
        alert("密码必须是6-12位");
        return false;
    }

    //二次验证密码
    var rePwd = document.getElementById("myForm").elements["rePassword"].value;
    if (rePwd != pwd) {
        alert("密码验证错误");
        return false;
    }

    //手机号码
    var phone = document.getElementById("myForm").elements["phone"].value;
    var phoneRegex = /^(13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$/;
    if (!phoneRegex.test(phone)) {
        alert("手机格式不对");
        return false;
    }


    var md5Pwd = hex_md5(pwd);
    // alert(md5Pwd)
    $("#PWD").val(md5Pwd)

}

//账号验证
function accountFuncOut() {
    var account = document.getElementById("myForm").elements["username"].value;
    var accMessage = document.getElementById("accountSpan");
    if (account == null || account == "") {
        //获取显示提示信息的标签
        accMessage.innerText = "✘ 账号不能为空";
        return false;
    } else {
        accMessage.innerText = "√";
        accMessage.style.color = "blue"
    }
}

//密码验证
function passwordFunc() {
    pwd = document.getElementById("myForm").elements["password"].value;
    var pwdMessage = document.getElementById("pwdSpan");
    if (pwd == null || pwd == "") {
        //获取显示提示信息的标签
        pwdMessage.innerText = "✘ 密码不能为空";
        pwdMessage.style.color = "red";
        return false;
    } else if (pwd.length < 6 || pwd.length > 12) {
        // 获取显示提示信息的标签
        pwdMessage = document.getElementById("pwdSpan");
        pwdMessage.innerText = "✘ 密码必须是6-12位";
        pwdMessage.style.color = "red";
        return false;
    } else {
        pwdMessage.innerText = "√";
        pwdMessage.style.color = "blue"
    }
}

function rePasswordFunc() {
    var rePwd = document.getElementById("myForm").elements["rePassword"].value;
    var repwdM = document.getElementById("repwdSpan");
    if (rePwd == null || rePwd == "") {
        //获取显示提示信息的标签
        pwdMessage.innerText = "✘ 密码不能为空";
        pwdMessage.style.color = "red";
        return false;
    }
    if (rePwd != pwd) {
        repwdM.innerText = "✘ 两次密码不相等";
        repwdM.style.color = "red";
        return false;
    } else {
        repwdM.innerText = "√";
        repwdM.style.color = "blue"
    }
}



function checkLogin() {
    var password = $("[name=password]").val();
    var md5Pwd = hex_md5(password);
    alert(md5Pwd)
    $("#PWD").val(md5Pwd)
}




//验证码
$(function () {
    var show_num = [];
    draw(show_num);

    $("#canvas").on('click', function () {
        draw(show_num);
    })

    $("#submit").on('click', function () {
        var val = $(".input-val").val().toLowerCase();
        var num = show_num.join("");
        if (val == '') {
            alert('请输入验证码！');
        } else if (val == num) {
            // alert('验证成功！' + val);
            /* 验证码验证成功则跳转 */
            var username = $("[name=username]").val();
            var password = $("[name=password]").val();
            // alert("checkAccount" + username +":"+ password);
            $.ajax({
                url: "/loginPage",
                method: "POST",
                data: {
                    "username": username,
                    "password": password,
                },
                dataType: "html",
            }).done(function (page) {
                alert(page);
                // location.href = page
                // window.location = page
            })


        } else {
            alert('验证码错误！请重新输入！');
            $(".input-val").val('');
            draw(show_num);
        }


    })
})

function draw(show_num) {
    var canvas_width = $('#canvas').width();
    var canvas_height = $('#canvas').height();
    var canvas = document.getElementById("canvas"); //获取到canvas的对象，演员
    var context = canvas.getContext("2d"); //获取到canvas画图的环境，演员表演的舞台
    canvas.width = canvas_width;
    canvas.height = canvas_height;
    var sCode = "A,B,C,E,F,G,H,J,K,L,M,N,P,Q,R,S,T,W,X,Y,Z,1,2,3,4,5,6,7,8,9,0";
    var aCode = sCode.split(",");
    var aLength = aCode.length; //获取到数组的长度

    for (var i = 0; i <= 3; i++) {
        var j = Math.floor(Math.random() * aLength); //获取到随机的索引值
        var deg = Math.random() * 30 * Math.PI / 180;
        /*//产生0~30之间的随机弧度 */
        var txt = aCode[j]; //得到随机的一个内容
        show_num[i] = txt.toLowerCase();
        var x = 10 + i * 20; //文字在canvas上的x坐标
        var y = 20 + Math.random() * 8; //文字在canvas上的y坐标
        context.font = "bold 23px 微软雅黑";

        context.translate(x, y);
        context.rotate(deg);

        context.fillStyle = randomColor();
        context.fillText(txt, 0, 0);

        context.rotate(-deg);
        context.translate(-x, -y);
    }
    for (var i = 0; i <= 5; i++) { //验证码上显示线条
        context.strokeStyle = randomColor();
        context.beginPath();
        context.moveTo(Math.random() * canvas_width, Math.random() * canvas_height);
        context.lineTo(Math.random() * canvas_width, Math.random() * canvas_height);
        context.stroke();
    }
    for (var i = 0; i <= 30; i++) { //验证码上显示小点
        context.strokeStyle = randomColor();
        context.beginPath();
        var x = Math.random() * canvas_width;
        var y = Math.random() * canvas_height;
        context.moveTo(x, y);
        context.lineTo(x + 1, y + 1);
        context.stroke();
    }
}

function randomColor() { //得到随机的颜色值
    var r = Math.floor(Math.random() * 256);
    var g = Math.floor(Math.random() * 256);
    var b = Math.floor(Math.random() * 256);
    return "rgb(" + r + "," + g + "," + b + ")";
}